he talks about the evolution of facebook at a conference at the university of california. this is about 50 minutes. >> thanks, everyone for coming. i do think this is actually a bit of a treat. i have been covering facebook for years and years, and you rarely see chris cox out here doing his visionary thing that you are about to get. your title as the vp of product, which is a suspiciously vague title -- what do you actually do on a day-to-day basis? >> over the last three years, i have built out the product management and the design teams. each group of people that is building a new feature or product has a bunch of engineers, a product manager, and some designers. i have been responsible for building out the product management and design and functions at facebook. >> for people who might not think of product the way you do, what is a product on facebook? >> the like button is a product. newsfeed is a product. your timeline is a product that facebook delivers. it is a little bit of an interesting twist on a product because a product in a lot of consumer technology compani